Precision engineering feem ntau xav tau metrology thiab kev sib dhos ua haujlwm nyob ib sab los ua cov cua sov tseem ceeb, ncu, lossis ntau lawm ntau lawm machine. Thaum granite yog cov thoob ntiaj teb nyiam rau nws qhov tshwj xeeb intrinsic stability, ib puag ncig kev ua kom muaj kev xav tau ntawm lub qhov ntxig rau cov khoom siv thermal stability.
Thaum qhia tau ib lub tshuab granite, ob peb qhov kev ntsuas kub thiab lub cev siv zog yuav tsum ua qhov tseem ceeb. Peb yuav tsum xaiv cov hom granite uas yuav ua tau zoo tshaj plaws hloov pauv thiab tshuab hluav taws xob tsis zoo vim kub.
1. Tus ib leeg tseem ceeb tshaj meterical: coefficient ntawm thermal expansion ()
Thawj qhov tshwj xeeb los tshuaj xyuas yog cov coefficient ntawm thermal expansion (CTE), sawv cev los ntawm Greek tsab ntawv. Qhov txiaj ntsig ntau npaum li cas cov khoom siv nthuav dav lossis cog lus ib qib ntawm kev hloov kub.
Granite Qhov Zoo Tshaj: Txheej Txheem Granite yog PRILED Vim tias nws cov nqi feem ntau yog 510⁻⁶ rau ib nrab (3.5 μin / DEGLE F). Qhov no yog kwv yees ib nrab ntawm cov hlau (≈12 × 10⁻⁶ / degree).
High - Xaiv thaum sov sov: Rau siab-} kub} aim aim aim lowုင်း ib puag ncig, tsom rau cte qis tshaj CTE muaj. Qhov sib txawv ntawm cov hom granite yog qhov tseem ceeb ntawm no. Thaum pink armite yuav muaj ntau dua cov kev tiv thaiv ntau dua vim muaj cov ntsiab lus quartz cov ntsiab lus tsawg dua, ua rau qhov kev xaiv dub me me kom txo qis kub {}} inductsal.
Hauv kev coj ua: ib qho qis CTE kom ntseeg tau tias txawm tias lub platform hloov pauv mus rau hauv lub micro tsim nyog nyob rau hauv cov mic}} nti (lossis micron) ntau yam.
2. Thermal gradient (ΔT) thiab khoom hom
Nws tsis tshua muaj qhov kub kom ua rau muaj teeb meem; Nws yog qhov kub sib txawv ntawm sab saum toj thiab hauv qab ntawm lub phaj, hu ua thermal gradient (ΔT).
Lub flatness kev pheej hmoo: Thaum lub sab saum toj yog sov dua li hauv qab (muaj kev nthuav dav sab saum toj Hloov siab, yog tias hauv qab yog sov (tsawg), cov nplaim muaj peev xwm tog.
Lub luag haujlwm ntawm ntom thiab conductivity: Granite tus kuj tsis tshua muaj cua sov conductivity piv rau cov hlau txhais tau tias kub tau hloov qeeb. Qhov no ua qhov txiaj ntsig hauv kev hloov pauv ib puag ncig, tso cai rau lub phaj kom tawm tsam cov kev hloov pauv me me. Txawm li cas los xij, thaum muab tso ze rau ntawm qhov siab tas mus li- qhov kub ua tau los ua qhov kub thiab txias thiab ua rau muaj kev puas tsuaj, ua kom tsis tu ncua.
Kev xaiv xaiv: Nrhiav nplua - nplej, siab- density dub granite. Cov khoom siv no yog qhov kev nyiam rau nws cov txheej txheem sib xws, uas pab nws tswj nws cov kev saib xyuas sab hauv thiab tawv ncauj txawm tias thaum raug rau cov chaw thau khoom cua sov.
3. Mechanical Stability tiv thaiv kev ntxhov siab thermal
Txog kev siv sijhawm nyob ze cov chaw muaj cua sov (tshwj xeeb tshaj yog nyob rau hauv cov chaw muaj kub muaj mus txog 150℃los yog ntau dua), thev naus laus zis thev naus laus zis los ua qhov tseem ceeb.
Kev tshawb fawb qhia tau tias raug rau nce qhov kub tau kub tuaj yeem qhia lossis propagate micro - nrib pleb hauv lub pob zeb, feem ntau ncig 150 degree. Qhov no ntev - Termal cycling tuaj yeem subtly degrade granite:
Elastic modulus (nruj me ntsis): tsis muaj zog cov khoom muaj peev xwm tiv thaiv tsis tau deflection hauv kev thauj khoom.
Compressive muaj zog: txo lub zog nws tuaj yeem daws ua ntej poob.
Cov lus qhia ua tau zoo: yog tias koj daim ntawv thov cuam tshuam nrog tso cov khoom siv uas yog tus kheej kub rau hauv lub platform, lossis yog qhov chaw ntsuas kub nyob sab saud 40 degree. Qhov no yuav suav nrog:
Kev Rho Tawm: Txhim kho siab - Performance Thermal so los yog rwb thaiv tsev nruab nrab ntawm qhov chaw kub (cub) thiab Granite platform sawv.
Cov cua txias: tsim ib cheeb tsam hauv zos, ruaj khov, thiab lim cua sib xyaw ua ke lossis thaj tsam thaj tsam kom ntseeg tau tias cov granite phaj kub sib xws.
Hauv kev xaus, rau high - Cov khoom siv xaiv tau yooj yim rau cov kev tswj hwm hluav taws xob ruaj khov, thiab ib txwm siv cov cua sov gratient (ΔT) hla lub phaj tuab.